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SubjectRe: [PATCH] slab: deal with NULL pointers passed to kmem_cache_free
On Mon, Mar 19, 2007 at 10:08:03AM -0700, Christoph Lameter wrote:
> On Mon, 19 Mar 2007, Pekka J Enberg wrote:
>
> > This changes kmem_cache_free() to deal with NULL objects passed to it. The
> > current behavior is inconsistent with kfree() so there are callers
> > passing NULL to kmem_cache_free().
>
> Hmmm.. kmem_cache_free is significantly different. One also needs to
> specify the slab cache.

I think this sort of thing should work:

a = kmalloc(...)
b = kmem_cache_alloc(..)
c = allocate_some_id(...)
if (!a || !b || !c) {
free_some_id(c)
kmem_cache_free(c)
kfree(a);
return -ENOMEM;
}
--
Mathematics is the supreme nostalgia of our time.
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